Related Clues:

• Cause problems
• Be bratty
• Be naughty
• Get rowdy, e.g.
• Activist group whose motto is 'Silence=Death'
• Be mischievous
• Emulate a brat
• Become troublesome
• Cause a ruckus
• Raise hell
• Behave in an unruly manner
• Behave rudely
• Turn unruly
• Make a nuisance of oneself
• Give trouble, make a fuss